Which of the following choices is the correct IUPAC name for the molecule below?
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A) 3-ethyl-4,4-dimethylheptane
B) 4,4-bimethyl-3-ethylheptane,
C) 5-ethyl-4,4-dimethylheptane
D) 4,4-dimethyl-3-ethylheptane

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?

Iwould appreciate if someone could me.